<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script>
			console.log("gb:", i);
			var i = 1;
			foo(i);
			function foo(i){
				if(i == 4) return;
				console.log("fb:" + i);
				foo(i + 1);	
				console.log("fe:" + i);
			}
			console.log("------------------");
			
			function a(){}
			var a;
			console.log(a);
			
			console.log("------------------");
			
			if(!(b in window)){
				var b = 1;
			}
			console.log(b);
			
			console.log("------------------");
			
			var c =1;
			function c(c){
			    console.log(c)
			}
			c(2);
			
			
		</script>
	</body>
</html>
